THE ANNALS
AND
MAGAZINE OF NATURAL HISTORY,
INCLUDING
ZOOLOGY, BOTANY, AND GEOLOGY.
( BEIKG A CON'J'DlUATION OP THE 'AN"N"ALS' CO�IRJKED W[Tll LOUDON AND
CIIARLESWORTll•S I MAGAZINE OF NATURAL HISTORY,')
CONDUCTED BY
AU!El T C. L. G. GUNTHER, M.A., M.D., Ph.D., F.R.S.
WII,LIAM CARRUTHERS, F.R.S., F.L.S., F.G.S.,
ANO
WILLIAM FRANCIS, Ph.D., F.T,.S.
VOL. XVIII.-SIX' II SBHIES.
LONDON:
PRINTED AND PUilLISIIED IlY TAYLOR AND FR. NCIS.
:OLD BY SIMPKIN, MARSIIALL, JIA�ULTON, KENT, A: "D CO., LD.;
WHITTAJ{lU • . ND CO.: Il. lLLd:nE, PAIUS:
MACLACHLAN .AND STEWART, EDl�BURGII:
UODGKS, FIOGIS, AND CO., DOOLIN: AND ASll.ETI, BERLIN.
1896.
THE AN:N ALS
AND
) AGAZINE OF NATURAL HISTORY.
[SIXTH SERIES.)
.No. 106. OCTOBER 1896.
Ann, & Jlag, N. Hi"s . Se . 6. Vol. x iii. 20
On new .Mammals om he ,Yeo opical Region. 301
XLVI.-On new small Mammals. om l e Neo opical Region.
By OLDFIELD THOMAS.
DURING he pas six mon hs se e al collec ions o small
mammals om di e en pa s o Uen al and Son h Ame ica
ha e been ecei ed a he B i ish Museum, and among hese
he e a e a ce ain numbe o new species, which may be
con enien ly all desc ibed iu one pape .
GLYPHONYCTERIS *, gen. no .
(Fam. Pl,y/los oma idw; g oup Va npy i.)
Nose-lea na ow, bound down o he muzzle in on .
Chin-wa s appa en ly only wo, one on each side o a cen al
• y"/.. cjm , o chisel.
302 J l . O. Thomas on new ] ammals
g oo e. Ea s sepa a e, no connec ed ac oss he head.
Tail sho , pe o a ing he in e emo al memb ane and
appea ing on i s uppe su ace. 1Ving-memb ane om he
side o he ankle.
Skull hin and pape y. P o ile-line om op o muzzle o
c own nea ly s aigh , no ma kedly conca e. An eo bi al
egion b oad, wi h a dis inc in la ion jus abo e he an e io
co ne o each o bi , he b ead h o he muzzle o e he an e
o bi al o amina much g ea e han he pos o bi al b ead h.
Den i ion.-!.�' C. , P. �, J I. jx2=3-!.
Uppe middle inciso s la ge, e ical, chisel-shaped, hei
cu ing-blades b oad, e y hin an e o-pos e io ly. Ou e
inciso s minu e. Canines sho , sha ply poin ed, hei an e o
pos c io basal abou cq ual o hei e ical diame e . P e
mola s subequal, o al o ounded in sec ion. Lowe inciso s
dis inc ly icuspid, subequal. Canines low, sca cely ex
ceeding he o he ee h in heigh . P emola s subequal, he
median one ully as la ge as he o he wo.
This genus is e iden ly mos nea ly allied o Mic onyc e is
(Schizos oma o Dobson's Ca alogue), bu di e s by i s uncon
nec ed ca s, b oade n nzzle, in la ed an eo bi al egion, s aigh
on al p o ile, and peculia chisel-shaped inciso s. No o he
<lesc ibcd genus shows i s sho ail, den al o mula, and well
.de eloped middle lowe p emola .
Glyplwnyc e is syl es is, sp. 11.
Ex e nally e y simila o Hemide ma b e icauda, hough
n hc smalle *. Ea s sho , hei ip o ming an almos
squa e angle, he ou e and inne edges dis ally being
app oxima ely a igh angles o each o he ; lowe pa o
ou e edge ending in a low ounded lobule. Fn so and
£ue, no ex ending on o he wings o limbs, excep ha he
pollical me aca pals and he backs o he ee a c hinly u ed.
Colou abo e mixed smoky g ey, he hai s <la k smoky basally
and e minally, whi e o hei middle hi d; below hey a e
smoky basally and dull whi ish e minally. In e emo al
memu nne b oad, ex ending in he middle liue o he le el o
he dis al hi d o he ibilll.
Skull and ee h as desc ibed abo e.
• This esemblance is so g ea ha almos he only cha ac e which
.a o ds a eady means o dis inguishing he wo is he sho and delica e
humb o Glyplwnyc e is as opposed o he long hea ily clawed one o
Hemide na, In colou he wo a e almos iden ical.
om he Neo opical Region.
Dimensions o he ype (an adul male skin):
Fo ea m 40 millim. (=1·5G inch).
303
Head and body (measu ed by collec o in lesh) 50 millim.;
ea (d ied) 17; humb, wi h claw, 9·2; middle inge -me a
ca pus 3(:i, i s phalanx 13·5, second phalanx 20, hi d
phalanx 10·5; ibia 15; hind oo , wi h claws, lO·G;
calca 7·2.
l::ikull: g ea es leng h 19·G; basal leng h 16; g ea es
b ead h 9·6 ; b ead h o muzzle a in la ions, jus o e an e
o bi al o amina, 5·7; in e o bi al b ead h 4·6; on o uppe
canine o back o m, 3 8.
/ ob. lm a alles, Cos a Rica.
Coll. C. F. Unde wood, No . 8, 1895.
Rhipidomys enezuelw, sp. n.
Closely allied o Rh. mac u us, Ge ., wi h which i sha es
he gene al ich n ous colou , long ail, and sha ply de ined
pu e whi e belly. Ea s la ge, much la ge and, especially,
b oade han in R ,. mac u us. Gene al colou abo e a he
o ange- u ous in he ype (an old male), bu in a younge
emale clea e u ous, simila o some specimens o Rh. Sumi
ch as i. Hands and ee , as usual, wi h he me apodials
b own mesially, he emainde and he digi s whi e. Tail
long, uni o mly da k b own abo e and bel011·, hai y and
u ed, bu less so i an in mos o he la ge species o he
g oup.
Skull wi h ai ly long nasals; a a he na ow in e o bi al
egion, whose edges a e sha ply idged. In e pa ie al la ge,
i s an e io edge e y conca e o wa ds. An e io pala ine
o amina ex ending backwa ds o he le el o he on edge
o m.1.
Dimensions o he ype (an adul male, measu ed in he
lesh by collec o ) :-
Head and body 155 millim.; ail IGO; ea 20. In he
d ied s a e he hind ee a c 28 millim. long and he ea haa
sh unk o 19 millim.
Skull: basal leng h 31·2; basila leng h om henselion 29;
g ea es b ead h 19·5; nasals 12 X 4; in e o bi al b ead h 5·2,
in e pa ie al 5·1 x 9·2; pala e leng h om henselion 15·1;
dias ema 10; an e io pala ine o amina 7·6 x 3; leng h o
uppe mola se ies 5· l.
llab. Me ida, Venezuela, al . 1630 me es.
Coll. S. B iceno, .illa ch 5, 189G.
Besides he di e ences in he size o he ea s and he
hai iness o he ail his species di e s om Rh. mac u us by
304 111 . 0. Thomas on new li ammals
i s <lecidedly na owe in e o bi al egion and slende e muzzle,
he sa ne c anial cha ac e s also sepa a ing i om Rh. la i
manus.
Rhipidomys mic o is, sp. n.
A a he small llln'pidomys, wi h a sca cely pencilled ail
and e y small ea s.
Fu close and so . Gene al colou ul ous, dulle and less
u ous han in he majo i y o his g oup; pe haps nea es o
Ridgway's "clay-colou "; in he cen e o he back inely
lined wi h black, clea c ' on he sides. Unde su ace whi e,
he hai s whi e o he oo s; line o dema ca ion on sides o
belly less well de ined han usual. Whiske s long and
nume ous. Ea s small and na ow, hinly hai ed, pale
b own. l le apodials b ownish, digi s dull whi e, bu he
di e ence li le ma ked. Tail long, e y inely scaled, uni
o mly b own h oughou ; sca cely mo e bushy han in non
Rhipidomyine Vespe - a s.
Skull o only specimen un o una ely much b oken.
l uzzle sho and na ow, sup ao bi al idges sha p. Zygo
ma ic pla e no p ojec ed o wa ds. An e io pala al o amina
long, eaching backwa ds o he le el o he i s lamina o
m. 1 lllola s as usual in he g oup.
Dimensions o he ype (an adul male iu skin):-
Head and body 109 millim.; ail 136; hind oo 25;
ea 12 x 9.
Skull: basila leng h om henselion (c.) 22; nasals 9·6x
3·4; in e o bi al b ead h 4·8 ; pala e leng h om lienselion
11 ·5; dias ema 7·3; an e io pala ine o amina 6 x 2·6;
leng h o uppe mola se ies 4·7.
Hab. Salina de! Va an, ·wes e n Cundinama ca, Co
lombia.
Type killed No . 16, 1895.
Rhipidomys ul i en e , sp. n.
Abou he size o Rl . mic o is. Fu e y hick and so .
Gene al colou abo e ul ous, hickly lined wi h black.
Unde side clea e ul ous o e en bu , he line o dema ca
ion sca cely ma ked; hai s o belly sla y g ey basally, bu y
e minally. Chin and ches whi e . l Iamm e 1-2=6.
Ea s n he small, uni o mly b own. llle apodials wi h he
usual piebald pa ches s ongly ma ked; digi s pu e whi e.
Tail long, uni o mly b own, no e y hickly hai ed basally,
bu wi h a long a11d well-de ined pencil e minally.
Skull wi h a la ge ouuded b ain-case and slende na ow
om he Neo ,·opical Re,qion. 305
ace. In e o bi al egion la , i s edges squa e, no hea ily
idged. Pala al o amina a he na ow o he g oup, ex
enJing backwa d o he le el o he on o �. Hull e
a he , hough no measu ably, la ge han in he allied
species o he g oup.
Dimensions o he ype (an adul emale in skin):-
Head and body 113 millim.; ail 125, wi h e minal u
141; hind oo (mois enecl) 24; ea (d y) 14.
Skull: basal leng h 25·7; basila leng h om henselion
23·8; g ea es b ead h 16·G; nasals 10·5 x 3·7 ; in e o hi al
b ead h 4·3, in e pa ie al 4·1 x 10·6; pala e leng h om
hensclion 12·8; dias ema 8; pala ine o amina G·2 x 2·2;
leng h o uppe mola se ies 4·7. Lowe jaw: condyle o
inciso - ip 18·8.
Hub. Agua Dulce, Y. Cunclinamn ca, Colombia.
Type collec ed Sep . 19, 1893.
Tbis p e y Vespe - a di e s om all o he mcmbe,·s o
Rl,ipidomys by i s sla e-mixed ul ous belly, his pa being
in he o he species pe ec ly pn e whi e. A e y yo, ng
specimen om Fauabis ,i co esponds in all espec s wi h he
old one.
0 yzomys ni eipes, sp. n.
Gene al appea ance ema kably like 0. lanige , Thos.,
al hough i is sligh ly la ge . Fu e y long, so , and
lu y. Gene al colou dull oli c- ul ous, da ke mesially
abo e, clea e and pale along he sides and bclolV; line o
dema ca ion on sides indis inc . Hai s e e ywhe e abo e and
below sla e-colou ed basally. Ea s la ge, well-hai ed, black.
Hands and ee sil e y whi e abo e, wi hou da ke me a
a sals. Tail long, hinly hai ed, b own abo e, pale below.
Skull e y di e en om ha o 0. l,am"ge . Face long
and slende , wi h a na ow muzzle and long, na ow, pa allel
sided in e o bi al egion, whose edges a e ounded and no
idged. B ain-case smoo hly ounded, no b oad in p opo
ion o i s leng h. Zygoma ic pla e li le p ojec ed o wa d.
Pala al o amina eaching jus pas he an e io end o "=-2.
Dimensions o he ype (an adul male in skin):-
Head and body 113 millim.; ail 140; hind oo 26;
ea 18.
Skull: basal leng h 26·8; basila leng h om henselion
2,5 ; g ea es b ead h 16; nasals 12·4 x 3·8; in c o bi al
b ead h 4, in c pa ie al 3·5 x 10·5; pala e leng h om hen
selion 13·2; dias ema 8·7; pala al o amina 7 x 2·4; leng h
o uppe mola se ies 5. Lowe jaw: condylc o inciso
ip 19·5.
306 i'i . 0. Thomas on new JJlammals
Hab. La Oya de! Ba o, V. Cundinama ca, Colombia.
Type collec ed Sep . 2, 1895.
The esemblance o hiR species ex e nally o 0. lanige is
so g ea ha p ac ically he only means o dis inguishing
he wo lies in he b ownish ee o , a he , me a a sals o{
0. lanige as compa ed wi h he sil e y-whi e ones o he
new o m. The sknlls, howe e , a e wholly di e en om one
ano he bo h in size and p opo ions.
0 yzom,11s (?) lugens, sp. n.
Ve y simila in all espec s o he peculia 0. i"nccinus
desc ibed ecen ly om Pe u"· .Fu so , close, and el e y.
Gene al colou inely g izzled oli e-b own, bu li le ligh e
below han abo e. Ea s la ge, b own. Hands and ee
slende , hinly hai ed, b nwn abo e, he hai s a he bases o
he claws whi ish. Tail abou he leng h o he head and
body, uni o mly hinly hai ed, b own abo e, a he ligh e
below.
Skull in shape almos su.;ges ing ha o an 0xymyc e us
o A codon. J J uzzle long, cylind ical. In e o bi al con ex
abo e and ounded la e ally, wi hou ace o idges; indeed,
a sec ion h ough he nasal chambe be ween he o bi s would
p esen an almos ci cula ou line. B ain-case na ow,
smoo hly ounded. Zygoma a e y slende , li le expanded,
hei an e io oo na ow, slan ed, wi hou p ojec ing pla e.
Pala ine o amina ex ending back o he le el o he on o
m. I Lowe jaw e y slende , ma chiug ha o 0. incanus.
Mola s n lie Acodon in appea ance, wi h compa a i ely
higl1 c owns; m. 1 wi h i s an e io lamina unicuspid, so as o
p esen only i e cusps in all.
J leasn e nen s o he ype (an adul emale in skin):
Head and body 114 millim.; ail 118; hiud oo 27;
ea 17.
Skull: basal leng h 26; basila leng h om henselion 24;
g ea es b ead h ]4·8; nasals 12·2 x 3·8; in e o bi al b ead h
6; b ead h o b ain-case 12·8; an e io zygoma- oo 2·1;
leng h o pala e om henselion 13·2; dias cma 8·3; pala ine
o amina 5·9 x 2·6; leng h o uppe molai· se ies 4·8. Lowe
jaw: condyle o inciso - ip 19·7.
Bab. La Loma de! Mo o, nea Me ida, V eneznela, al .
3000 me es.
Coll. S. B iceno, J Iay 18, 1896.
"Eyes black, excessi ely small. J Iakes i s nes in ees."
-S. B i"ceno.
*Aun. & Mng. li"a . His . (6) xiY. p. 3W (1�04).
om he Xeo opical Region. 307
As in he cnse o " O yzomys" incan> s, i is impossible o
assign a sn is ac o y posi ion o his species, which di e s in
nea ly e e y espec om ypical membe s o he g-enus; bn
wi hou a a mo e ex ensi e knowledge o Sou h-Ame ican
:Mn ines han is possessed a p esen , i would be unwise o
add o he numbe o named g onps o wha used o be called
"Hespe omys." Yi hou. doing his, howe e , I ankly
con ess mysel incapable o inding a p ope place o he
p esen animal, and me ely pu i nominally unde he
heading o O 'yzomys as a empo a y expedien . I s slende
o m and long ail sepa a e i om Acodon, i s nail-clad
pollex and no mal muzzle show ha i is no an Oxymyc e,-us,
while i s na ow b ain-case and ounded in e o bi al egion
sepa a e i om all he o dina y species o 0,·.11zomys.
As a species 0. lll_gens seems eally mos closely allied o
0. incanus, om which i di e s by i s much na owe
b ain-case, mo e ounded in e o bi al egion, and di e en ly
shaped zygoma ic oo . Ex e nally i seems e y simila ,
bu as he ype o one is in spi i and he olhe,· in skin, an
accu a e compa ison o he quali y and colou o he u is
no a p esen possible.
Eligmodon * Jl o eni, sp. n.
Size a he la ge as compa ed wi h he e y small species
composing he g oup. Fu long and so , bu no woolly.
Gene al colou abo e coa sely mixed awn and b own, clea e
awn on he sides. Belly, as usual, pu e whi e o yellowish
whi e. {Imma u e specimens ha e he bases o he belly
hai s sla e.) Ea s la ge, o al. Pala e- idges 3-5. Uppe
sides o bands and ee sil e y whi e. Palms and soles as
usual in be g oup, g anula ed, wi h a la ge mo e o less
hai y and co uga ed pad a he base o he inge ., ancl oes;
a smalle mo e de ined pad a he bases o pollex and hallux,
and ano he a li le way behind he las -named. Tail longe
han he head and body, slende , hinly hai y h oughou ,
blackish abo e, whi e below and on he sides.
Skull s ou ly buil , wi h a b oad muzzle. ln e o bi al
egion la , i s edges squa e, no beaded. An e io pala al
o amina eaching backwa d one hi d he leng h o "'__:_!,
Pos e io na es e y na ow.
Dimensions o he ype (an adul male in spi i ) :-
Head and body 80 millim.; ail 91 ; hind oo 23; ea 17.
• Caloniys, Wa e h. (1837) nee Is. Geo . (1830).
E,i 1111odon ia, F. Cu . 1837.
Jie.,pe omys, Wa e h. 183!!.
314 Mess s. J. C. lllel ill ancl J. II. Ponsonby on
la ge, hei in e nal basal p ojec ion small; a ounded lobe a
he base o hei ou e e<lge. Fu close, so , an<l el e y.
Gene al colou abo e a da k smoky o bis e-b own, a dull
hu y inge p cs n on he o e back and sides. Unde su
ace di y whi ish, he sla y. bases o he hai s showing
h ough; line o dema ca ion on sides ai ly well de ined.
Colon o ace, limbs, and ail as in M. incana.
:kull simila in i s gene al p opo ions o ha o JJ . in
cana, bu decidedly smalle . Sup ao bi al edges no beaded.
An e io pala ine o amina cx en<ling backwa ds only o he
eanines. Canines e y sho . l liddle uppe p emola s
longe ho izon ally han e ically, e y na ow ans e sely.
Dimensions o he ype (an a<lul emale in skin, appa
en ly somewha con ac ed) :-
Head and body 118 millim. ; ail 138; ea 19.
Skull: lambda (back end o pa ie al su u e) o nasal ip 29;
g ea es b ead h (c.) 17; nasals 14 x 4; in e o bi al b ead h 6;
in e c npo al b ea<l h 6·1 ; pala e leng h 18; pala e b ead h
be ween ou e co ne s o m. 3 9·6. Combined leng h o m. l-3 5·5.
llab. Rio Abba egas, llle ida, Venezuela, al . 1630 me es.
Coll. S. B iceno, Ap il 6, 1896.
The l Je ida collec ion con ains h ee species o he JJ1a
mosa g oup, o wl1icl1 he ln ges is a ypical Jl, , mudna and
he smalles is so like M. pusilla ha , in spi e o he con
side able ex ension o l,e known ange in ol ed, I do no see
auy eason o dis inguishing i . The middle one, howe e ,
al hough i may be said o ep esen JJ . incana, canno be
ac ually assig11ed o ha species, om which i di e s by i s
decidedly smalle size and much da ke colou ing, no ably
ha o he lowe su ace. No o he desc ibed species is a
all like i .
